<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
<div id="app"></div>
<button id="btn">点我</button>
<p id="pObj">这是p标签</p>
<script src="node_modules/@babel/standalone/babel.js"></script>
<script src="node_modules/react/umd/react.development.js"></script>
<script src="node_modules/react-dom/umd/react-dom.development.js"></script>


<script type="text/babel">
var btn=document.getElementById("btn")
var p=document.getElementById("pObj")

btn.onclick=(function () {
    console.log(this)
}).bind(p)



</script>


</body>
</html>